* src/closure.c, src/conflicts.c, src/derives.c, src/gram.c

[bison.git] / src / print_graph.c

diff --git a/src/print_graph.c b/src/print_graph.c
index f19769ac4aadd095bcb3aaae53af5efb7ca3bf89..d32e5520351e8b9f732674b99d1da258fb848c1f 100644 (file)
--- a/src/print_graph.c
+++ b/src/print_graph.c
@@ -19,7 +19,9 @@
    Boston, MA 02111-1307, USA.  */
 
 #include "system.h"
+#include "quotearg.h"
 #include "files.h"
+#include "symtab.h"
 #include "gram.h"
 #include "LR0.h"
 #include "lalr.h"
@@ -36,6 +38,13 @@
 static graph_t graph;
 static FILE *fgraph = NULL;
 
+static inline const char *
+escape (const char *s)
+{
+  return quotearg_n_style (1, escape_quoting_style, s);
+}
+
+
 /* This part will construct the label of nodes. */
 static void
 print_core (state_t *state, struct obstack *node_obstack)
@@ -45,11 +54,14 @@ print_core (state_t *state, struct obstack *node_obstack)
   int snitems   = state->nitems;
 
   /* Output all the items of a state, not only its kernel.  */
-  closure (sitems, snitems);
-  sitems = itemset;
-  snitems = nitemset;
+  if (trace_flag)
+    {
+      closure (sitems, snitems);
+      sitems = itemset;
+      snitems = nitemset;
+    }
 
-  obstack_fgrow1 (node_obstack, "%2d: ", state->number);
+  obstack_fgrow1 (node_obstack, "state %2d\n", state->number);
   for (i = 0; i < snitems; i++)
     {
       short *sp;
@@ -58,23 +70,23 @@ print_core (state_t *state, struct obstack *node_obstack)
 
       sp1 = sp = ritem + sitems[i];
 
-      while (*sp > 0)
+      while (*sp >= 0)
        sp++;
 
       rule = -(*sp);
 
       if (i)
-       obstack_sgrow (node_obstack, "\n    ");
+       obstack_1grow (node_obstack, '\n');
       obstack_fgrow1 (node_obstack, " %s -> ",
-                     tags[rule_table[rule].lhs]);
+                     escape (symbols[rules[rule].lhs]->tag));
 
-      for (sp = ritem + rule_table[rule].rhs; sp < sp1; sp++)
-       obstack_fgrow1 (node_obstack, "%s ", tags[*sp]);
+      for (sp = ritem + rules[rule].rhs; sp < sp1; sp++)
+       obstack_fgrow1 (node_obstack, "%s ", escape (symbols[*sp]->tag));
 
       obstack_1grow (node_obstack, '.');
 
-      for (/* Nothing */; *sp > 0; ++sp)
-       obstack_fgrow1 (node_obstack, " %s", tags[*sp]);
+      for (/* Nothing */; *sp >= 0; ++sp)
+       obstack_fgrow1 (node_obstack, " %s", escape (symbols[*sp]->tag));
     }
 }
 
@@ -113,9 +125,12 @@ print_actions (state_t *state, const char *node_name)
        edge.sourcename = node_name;
        sprintf (buff, "%d", state1);
        edge.targetname = buff;
-       /* Shifts are blue, gotos are red. */
-       edge.color = SHIFT_IS_SHIFT(shiftp, i) ? blue : red;
-       edge.label = tags[symbol];
+       /* Shifts are blue, gotos are green, and error is red. */
+       if (SHIFT_IS_ERROR (shiftp, i))
+         edge.color = red;
+       else
+         edge.color = SHIFT_IS_SHIFT(shiftp, i) ? blue : green;
+       edge.label = escape (symbols[symbol]->tag);
        output_edge (&edge, fgraph);
        close_edge (fgraph);
       }
@@ -185,7 +200,7 @@ print_graph (void)
   output_graph (&graph, fgraph);
 
   /* Output nodes and edges. */
-  new_closure (nitems);
+  new_closure (nritems);
   for (i = 0; i < nstates; i++)
     print_state (state_table[i]);
   free_closure ();